Improvement in planing-machines



A. VAN 'HAAGEN. VImprovement i'n PAIaYning-Mach-inesl.`

No. 128,190. Y kPatented Jurne18,k18?2,. Y

UNITED STATES PATENT FFICE.

ANTHONY VAN HAAGEN, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO HIMSELF AND CLAUS VAN HAAGEN, SAME PLACE.

IMPROVEMENT IN PLANING-MACHINES.

Specification forming part of Letters Patent No.-128,190, dated June 18, 1872.

Specification describing an Improvement in Plan in g-Machines, invented by ANTHONY VAN,

HAAGEN, of Philadelphia, Iennsylvania.

Improvement 'in PZwn'ing-lllachines.

My invention relates to mechanism for operating the reciprocating bed of a planing-machine; and consists of the combination, substantially as described hereafter, of a frictionwheel and a bar adapted to the same with the bed and base of a planing-machine, the object of my invention being simplicity in construction and a steady and determined movement of the bed.

In the drawing, Figure lis a vertical section of sufficient of a planing machine to illustrate my invention; Fig. 2, atransverse section on the line 1.2, Fig. l; and Fig. 3, a side view of one ofthe bearings o't' the driving-shaft drawn to an enlarged scale.

The base A of the planing-machine is of the usual construction, and has at the top the well-known' V-shaped grooves a for the reception of the correspondingly-shaped ribs b on the under side ofthe traversing-bed B. D is a shaft the journals of which are adapted to bearings or boxes d made vertically adjustable, to a limited extent, in openings in the base A, or in any suitable guides attached to the base, the vertical position of each bearing being determined, in the present instance, by a set-screw, e, as shown in Fig. 3. It is preferable for the bearings to be so arranged that they can yield to a very slight extent, and this end may be attained by placing between the bottom of each bearing and a plate, f, against which the adjusting-screw c bears, a thin strip, h, of rubber or other material possessing. a slight elasticity. To the shaft D is secured the friction-wheel E, on the periphery of which are formed any desired number of annular V- shaped ribs, adapted to correspondinglyshaped grooves in a bar, G, which is secured to the under side of the bed B, and extends from end to end of the same, or nearly so.

After many tests I have found that this rotating friction-wheel will operate-the bed with as much certainty as an ordinary cog-Wheel adapted to a rack beneath the bed, and that comparatively little pressure of the ribs of the wheel in the grooves of the bar is required for insuring a proper action of the wheel.

A prominent advantage of my invention is the steady continuous movement imparted to the bed-a movement which insures smooth4 and uniform planing, and which cannot be obtained by the ordinary cog-wheel and rack.

The movement of the bed is, in fact, as decided and uniform as that obtained by the screw sometimes used for operating the beds of planing-machines. The friction-Wheel, however, is not so costly nor so liable to wear as the screw and its nut. In fact, the friction-wheel improves in its action after being in use for some time.

It will be understood that the motion of the shaft D and its friction-wheel must be reversed in order to impart the desired reciprocating motion to the bed; but it has not been deemed necessary to illustrate or describe either the driving-gear orreversing mechanism, as devices used for this purpose in other planingmachines may be employed in the present instance.

I claim as my invention- The combination, substantially as described, of the friction-Wheel E and bar G, adapted to the same, with the base and bed of a planingmachine.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ANTHONY VAN HAAGEN.

Witnesses:

' WM. A. STEEL, HAR-RY SMITH. 

